<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>文本</title>
    <style>
        mark {
            background-color: transparent;
            color: red;
        }
    </style>
</head>
<body>
<ruby>
    <span>魑魅魍魉</span>
    <rt>1234</rt>
</ruby>

<p>11111111111111<mark>111</mark>11111111111111111</p>
</body>
</html>